Readers ask: What happens when a main-sequence star exhausts its core hydrogen fuel supply?

Readers ask: What happens when a main-sequence star exhausts its core hydrogen fuel supply?

What happens when a star exhausts its core hydrogen supply?

What happens when a star exhausts its core hydrogen supply? A) Its core contracts, but its outer layers expand and the star becomes bigger and brighter.

What happens when a main sequence star first runs out of hydrogen in its core?

As the main sequence star glows, hydrogen in its core is converted into helium by nuclear fusion. When the hydrogen supply in the core begins to run out, and the star is no longer generating heat by nuclear fusion, the core becomes unstable and contracts. In the core of the red giant, helium fuses into carbon.

What happens to a star after it exhausts its core hydrogen quizlet?

When a red giant star exhausts its core hydrogen fuel, the core contracts but the star expands as a whole. However, the shell of hydrogen outside the core heats up to very high temperatures (hotter than the core during the main-sequence phase), and hydrogen fusion is occurring quickly.

What happens when a low mass star exhausts its core hydrogen supply?

After a low mass star like the Sun exhausts the supply of hydrogen in its core, there is no longer any source of heat to support the core against gravity. Hydrogen burning continues in a shell around the core and the star evolves into a red giant.

Which stage lasts the longest?

During interphase, the cell undergoes normal growth processes while also preparing for cell division. It is the longest phase of the cell cycle, cell spends approximately 90% of its time in this phase.

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What happens when a star bigger than the sun’s core collapses?

The fate of the left-over core depends on its mass. If the left-over core is about 1.4 to 5 times the mass of our Sun, it will collapse into a neutron star. If the core is larger, it will collapse into a black hole. Only stars with more than 20 times the mass of the Sun will become black holes.

What will happen if a low massive main sequence star runs out of hydrogen fuel answer?

Recall that these stages for low mass stars are: hydrogen burning in the core while on the Main Sequence. as the hydrogen fuel runs out, extreme pressure raises the temperature to 100 million degrees, where helium burning becomes possible.

What will happen if a low massive main sequence star runs out?

When a main sequence star begins to run out of hydrogen fuel, the star becomes a red giant or a red super giant. THE DEATH OF A LOW OR MEDIUM MASS STAR After a low or medium mass or star has become a red giant the outer parts grow bigger and drift into space, forming a cloud of gas called a planetary nebula.

Which star spends the longest time in the Protostellar phase of life?

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What do we mean by the interstellar medium? the gas and dust that lies in between the stars in the Milky Way galaxy
Which star spends the longest time in the protostellar phase of life? a 1 solar mass star

What happens to the core of a star after a planetary nebula occurs?

what happens to the core of a star after a planetary nebula occurs? become a white dwarf. When this happens, the star explodes as a supernova.

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Which is more common a star blows up as a supernova?

Which is more common: a star blows up as a supernova, or a star forms a planetary nebula/white dwarf system? Planetary nebula formation is more common. This diagram represents the life track of a 1 solar-mass star from its pre-main-sequence stages to just before its final death.

What will happen in the sun immediately after it has exhausted its supply of hydrogen in its core?

The ultimate fate of our Sun is to ________. What will happen in the Sun immediately after it has exhausted its supply of hydrogen in its core? The helium core will shrink and heat; a shell of hydrogen will start fusing. This diagram represents the life track of a 1 solar mass star.

Harold Plumb

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